In primitive society, humans counted by knotting ropes, and the size of knots was used to represent the size of wild animals. The concept of number is gradually developed in this process.
Extended data
The emergence of other disciplines:
1 philosophy
Philosophy originated in the ancient slavery period when social productive forces developed greatly. At that time, the development of social economy greatly improved people's cognitive ability, and people began to think about the nature of the world and other theoretical issues, and early human philosophy appeared.
2. Physics
Physics is composed of the study of natural philosophy which is very similar to the classical times. It was not until19th century that physics was separated from philosophy and became an empirical science. Galileo Galilei, the founder of modern human physics, laid the foundation for the development of modern human physics.
3. Chemistry
From ancient times to BC 1500, humans learned to make pottery with clay, burn metal with ore, make wine with grain, and dye silk and linen. These are the earliest chemical processes that were directly inspired by practical experience and explored for a long time.
References:
Baidu encyclopedia-mathematics